Product Information
With optimal forming technology and ERW(Electric Resistance Welding) method, the pipe with outside diameter less than 92mm
High strength, extremely thick(up to T/OD=25%, Sch.160) steel pipes
Eddy Current Testing(ECT), non-destructive testing guarantees weld ability
Application
Steering Shaft, Rack Bar, Tie Rod, Axle Housing, Door Impact Beam, Propeller Shaft, etc.
Hydraulic machine, Machine parts; Cylinder rod, Bush, and Roll, etc.
Electric, electronic goods(mainly by applying Cold Rolled Coil); Comp case of Air Conditioner, etc.
Product Ranges
Product Standard
a. KS D 3517 ;STKM, JIS G 3445; STKM, JIS G 3472;STAM
b. KS D 3507(SPP), D3562(SPPS380), D3631(SPPG) JIS G 3542(SGP), JIS G 3454(STPG), ASTM A53A, ASTM A795
Outside Diameter : Ø27.2 ~ Ø92.5, 21A~80A
Steel Type : HR, PO, CR
Thickness : 1.5mm~9.0mm, SCH#5~#160
Application: high pressure service
Chemical Composition: | |||||
Grade | C | Si | Mn | P | S |
STS 370 | <0.25 | 0.10-0.35 | 0.30-1.10 | <0.035 | <0.035 |
STS 410 | <0.30 | 0.10-0.35 | 0.30-1.40 | <0.035 | <0.035 |
STS 480 | <0.33 | 0.10-0.35 | 0.30-1.50 | <0.035 | <0.035 |
Mechanical Property: | ||
Grade | Tensile strength N/mm2 | Yield Strength N/mm2 |
STS 370 | >370 | >215 |
STS 410 | >410 | >245 |
STS 480 | >480 | >275 |
Size Tolerance: | |||
Division | Tolerance on OD | Tolerance on WT | Tolerance on wall thickness deviation |
Hot-Finished seamless steel pipe | <50mm ±0.5mm | <4mm ±0.5mm | 20% or under |
>50, ≤160mm ±1% | |||
>160,≤200mm ±1.6mm | ≥4mm ±12.5% | ||
>200 ±0.8% | |||
Cold-Finished seamless steel pipe | <40mm ±0.3mm | <2mm ±0.2mm | --- |
≥40mm ±0.8% | >2mm ±10% | ||
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